Sodium Thiosulfate Pentahydrate
About This Item
| Product Name | Sodium Thiosulfate Pentahydrate |
| Product Code | 288890 |
| Appearance | Large, colourless crystals or coarse crystalline powder |
| Formula | Na₂S₂O₃ · 5H₂O |
| EC-No. | 231-867-5 |
| CAS-No. | 10102-17-7 |
| Assay | 99-100.5% |
| Molecular Weight | 248.17 |
| Grade | ACS Reagent |
Specification
| Colour | Colourless |
| Odour | Odourless |
| pH | 6 – 8.4 (5% Aqueous solution at 25°C) |
| Melting point | 48 °C |
| Boiling point | 100 °C |
| Flammability (solid, gas) | Non flammable |
| Density | 1.75 g/cm³ |
| Solubility | Water: 79 g/l – Soluble |
| Heavy metal (as Pb) | Max 0.001% |
| Water | 32.0 – 37.0% |
| Calcium(Ca) | Passes test |
| Chloride (Cl) | Max 0.05% |
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